I like this one and went to look at the book online.
Not crazy about all the lego-like characters but to each his own. Not sure I would spend that much time on something the kids would outgrow before they wore it out. I'm too slow.
I have also seen some monochromatic and modern quilts that I like, with limited colors and shapes/patterns. Very Mondrian-like, as is this one. I also like the quilting you did for this one.
Pretty straightforward but fits right in!
If you are really into this kind of quilt, check out
www.ohfransson.com and her Tokyo Subway Map Quilt.
Now THAT is a mathematical challenge!
Some day I'm going to tackle one her "easier" ones!